| Group Spec no. | Co-Cr | Co-Cr/NoAr | Co-Cr/Ar | Ni-Cr | Ni-Cr/NoAr | Ni-Cr/Ar |
| 1 | 4860 N | 5268 N | 6013 N | 5098 N | 4877 N | 4567 N |
| 2 | 4475 N | 5892 N | 5189 N | 4924 N | 5015 N | 5118 N |
| 3 | 4944 N | 5033 N | 5393 N | 4624 N | 5119 N | 4803 N |
| 4 | 4987 N | 4977 N | 5308 N | 4598 N | 4661 N | 4806 N |
| 5 | 4956 N | 5323 N | 4714 N | 4819 N | 5076 N | 4865 N |
| 6 | 4899 N | 5489 N | 4476 N | 4160 N | 5036 N | 4689 N |